Decorative foamed glass with dense glass surface layer and metho

Details Decorative foamed glass with dense glass surface layer and metho Decorative foamed glass with dense glass surface layer and metho

1988-08-26

1989-11-07

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

264 42, 264 43, 428213, 4283099, 4283124, 4283126, 428699, B32B 300, B32B 326, B29C 2760

Patent

active

048791598

ABSTRACT:
The invention relates to a foamed glass plate which has a dense glass surface layer on a foamed glass layer and which is useful as a building interior material or a furniture material. The interface between the two layers is made wavy, and the dense glass surface layer is made transparent or translucent so that a wavy pattern can be seen through the dense glass layer. For example, the interface is corrugated or rippled. The foamed glass plate can be produced by the steps of layering a granular material of foam glass on a conveyor belt made of a heat resistant material, desirably waving the upper surface of the layered material, overlaying the waved surface with a layer of a granular or powdery material of dense glass and firing the materials in layers on the belt in a furnace. The surface of the initially layered material can be corrugated by, for example, vertically oscillating the belt while the foam glass material is poured on the belt or can be rippled by pouring glass grains of suitably regulated grain size, as the material of the dense glass layer, onto a flat layer of the foam glass material.

REFERENCES:
patent: 4798758 (1989-01-01), Nagano et al.

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